Open the Real-Time Spectrogram display. Adjust the Contrast and Brightness sliders. A common mistake is keeping the FFT size too large (e.g., 1024). For bat calls, an FFT size of 256 or 512 offers a good trade-off between time and frequency resolution.
Hit record (Ctrl+R). Once the recording is finished, use Analysis > Pulse Train Analysis . The software will auto-detect vocalizations. Review the auto-detection manually; false positives occur in windy conditions. avisoft-saslab pro
